A friend in the States introduced me to the term "SIF" back in the day - Secret Internet Fatty. That is, gals on MySpace/OkCupid/whatever who post those angle-y pictures so you can't actually tell if they're morbidly obese.

There was a gal we both knew who we often referred to as "SIF Lord" for this very transgression.

I've definitely known a few of those over the years. They post 57 pix of their pretty faces, always angled in such a way and in certain light...so you can never tell they weigh 200 pounds. In some ways they're geniuses.